Reefer containers are suitable for transporting goods in a temperature-controlled condition. Temperature settings range from minus 20 to plus 20 degrees Celsius. Drains can be opened or closed for condensation discharge. This depends on the goods. Reefers are used for shipping any conditioned goods from frozen cargo (like french fries) and chilled cargo (like chocolate.) A high cube reefer is a approximately 30 cm higher than a regular reefer container. Many carriers only have 40ft reefers, and no standard 40ft reefers.